NatalChart.AI Astrology is listed as active in the registry but did not answer our last check. It exposes 10 tools.
Swiss Ephemeris astrology: natal charts, transits, synastry, solar returns and astrocartography.
Uptime history
38 days of history · worst day 0%
38 days agonow
0.0%
Uptime 24h
0 of 92 checks
10
Tools
read from the server
78 ms
Response time
average over 24h
open, no key
Access
streamable-http
What changed 12
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 October 2026. No other catalogue keeps this.
25 Oct
a tool description was rewritten
sky
18 Oct
10 tool descriptions were rewritten
best_cities, best_days, daily_transits and 7 more
8 Oct
a tool description was rewritten
location_score
NatalChart.AI Astrology does not always answer
Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.
run in your terminal
claude mcp add astrology --transport http https://www.natalchart.ai/mcpSettings → Connectors → Add custom connector, then paste this address
https://www.natalchart.ai/mcp~/.codex/config.toml
[mcp_servers.astrology]
url = "https://www.natalchart.ai/mcp".cursor/mcp.json
{
"mcpServers": {
"astrology": {
"url": "https://www.natalchart.ai/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"astrology": {
"type": "http",
"url": "https://www.natalchart.ai/mcp"
}
}
}Available tools 10
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
best
best_cities
The catalogue of major cities ranked for one chart, overall or by chosen life spheres, worldwide or in one region. (API Pro) Use it when the user asks where in the world to live, work or travel; it ranks major cities, optionally by life sphere or region.
best_days
Every day of a window of up to 62 days scored for one activity (general, business, romance, health, creative, travel, home, clarity): helping and hindering transits, Moon phase and sign, void of course. The five best days first. (API Pro) Use it to pick dates for an activity within the next weeks.
daily
daily_transits
The calculated day: the sky at noon UTC, the Moon's phase, the sky events of the coming week and, with birth data, every transit to the natal chart with its orb. No generated text. Use it for a day's horoscope or what is happening for someone now: send birth for a personal answer, leave it out for the general sky of that day.
location
location_score
One place against one chart: the relocated angles, the planets on them with orbs, a score for each life sphere and an overall score. (API Pro) Use it when the user asks whether a specific city or place suits them; it needs a birth time and the place's coordinates.
natal
natal_chart
A natal chart from birth data. "part" picks what to return: full (everything: bodies with sign, degree, speed, retrograde flag and house; the angles; twelve Placidus cusps; aspects with orbs; element and quality balance; fixed-star contacts), short (Sun, Moon and Ascendant, each body's sign, retrograde bodies, dominant element and quality), or one part: planets, angles, houses, aspects, elements, fixed-stars. Full by default. Use it whenever the user gives a birth date, time and place and asks about their chart, signs, houses or aspects, and before interpreting anything; part=short is enough for the Sun, Moon and rising sign.
sky
sky
Planetary positions, Moon phase and the coming week's sky events for a date (?date=YYYY-MM-DD, today by default). Works without a key: try curl https://api.natalchart.ai/v1/sky Use it for where the planets are on a date, the Moon phase, or the coming retrogrades and ingresses, when no one's chart is involved.
solar
solar_return
The solar return chart for a year, cast for the birth place or another location. (API Pro) Use it for the year ahead from a birthday; it needs a birth time.
synastry
synastry
Two charts compared: inter-chart aspects with orbs, house overlays both ways and a score per life sphere. (API Pro) Use it when the user asks about compatibility or a relationship and gives birth data for both people.
transits
transits
Up to 60 transit events in a window of up to 92 days, the most significant kept when there are more: exact transit-to-natal aspects by date, sign ingresses and stations. (API Pro) Use it for forecasts over weeks or months (a year is four windows); for a single day use daily_transits.
usage
usage
Your plan, today's count and when the pool refills. Costs nothing. Use it when a call fails on the limit, or before a long series of calls, to see the plan and what is left today.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://www.natalchart.ai/mcp | streamable-http | answering | 78 ms | 5 min ago |
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NatalChart.AI Astrology — questions
Answers built from our own checks of this server.
What can NatalChart.AI Astrology do?
It exposes 10 tools, read directly from the server on our last check. Among them: best_cities, best_days, daily_transits, location_score, natal_chart, sky and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is NatalChart.AI Astrology working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 78 ms. The bar chart above shows every period we have measured.
The registry lists NatalChart.AI Astrology as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect NatalChart.AI Astrology?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does NatalChart.AI Astrology need an API key?
No. NatalChart.AI Astrology completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.